Turret gear-cutter.



No. 844,717. PATBNTBD FEB.4 19, l907.`

E. R, FBLLOWS.

TURRET GEAR GUTTER.

APPLIUATION FILED APB.. 24. 1905. l

9 SHEETS-SHEET 1.4

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E. R. FBLLOWS. v

TURRET GEAR CUTTER. APPLIoATroN 141mm APB.24.1905.

9 SHEETS-SHEET 2.

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WITNESSES:

No. 844,717. PATBMED 1911.19, 1997.

' 9. R. PELLOWS.

TURRET GEAR GUTTER. APPLICATION FILED APR. 24.1905.

9 SHEETS-SHEET a.

IUIIINIIII l' PATENTED PEB. 19, 1907.

E. R. FELLOWS. TURRET GEAR GUTTER.

APPLIGATION FILED APB.24.1905.

9 SHEETS-SHEET 4.l

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l PTENTED H2B. 19, 1907. E. R. FELLOWS. v TURRET GEAR-CUTTER.APPLIUATION FILED APn.z4.19o5.

9 SHEETS-SHEET 5.

PATBNTBD FEB, 1954901 l E. R. FELLows.j TURRBTL GEAR cUTT-Em y`.APlLIGA'l'ION FILED APR. 24f 1905.

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.No.s44,71"1. A PATBNTED FEB.19, 1907. E. R. FELLows:

TURRET GEAR GUTTER.-

APPLIOATIOH FILED APR 24 1905 9 SHEETS-SHEET 71 No.A 844,717. PATENTEDFEB. 19, 1907.

' E. R. FBLLOWS.

TURRET GEAR GUTTER.

APPLICATION FILED APR.24. 1905.

9 SHEETS-SHEET 8.

INVENTDR Tala Noms Pneus. Inc. Lum.. msmumon. n4 4:4

PATENTED PEAB-.'19, 190'?. E. R; PBLLows..

TURRET GEAR GUTTER.

APPLICATION FILED APILM. 1905.

9 SHEETS-SHEET 9.

WTN 55955:

UNITED sTATEs4 PATENT OFFICE.

EDWINIE. FELLOws- O'E SPRINGFIELD, VERMONT, AssIGNOE TO THE EELLOws GEARsnAPER COMPANY, OF SPRINGFIELD, vErnuONT,y

A CORPORATION Or VERMONT.

TURRET GEAR-CUTTER.

To. (all zal/1,0711, it. nifty concern.'

Be it knewn that I, EDWIN. Pu FELLOws,l

of Spriiiglield, in the county cf Windsor end State cf fferincnt, haveinvented. cert-nin new end useful in'iprevei'nents in TurretGeer-Cutters, Of which the following 1s e speeiiicetien.

-This invention relates tO machines for cut-J ting gezirs inA which e.gear-shaped planingcutter' is caused te reciprocate in n line per*v:illel tO the `exis cf e cylindrical blank cf metal end plane Offparticles ci the blank et each reciprecctien, the cutter end blank beingsimultenesusly rotated es the cutting cperetien isI gcing en, whereby'the cutter is ceusedto generateA and ferm teeth cn the blenk cf e shapetein'esh with the teeth ci the cutter.

i The Object cf the inven'tien is -tc minimize the -deley necessiry ferremoving n finished gear end substituting e. blank. Ordinarily machineci this class requires es much cf the Operate` rs time for changing eblenk'es is Occupied in the cutting Operntisn, end ccnse quently e.large pcrtiiin cf the time is re-l quired to change the werk.

The inventien consists, therefcre,in e inechine cf the character ebcvereferred to heving e multiplicity' cfv hclding ineens fer retaininge'blnnk' in operative position with respect'to'the cuti Iend providedwith suitable `Ineens for chenging the pesitiin et these blank holdersto remove n finished gen1' -frem-prexiarityto the cutter end bring` e.

new blank automatically inte position end tO furnish suitable mechanismfer Jfeeding and indexing the blz-'inks end blank-holders.

Ot the accompanying drewingsFigure 1 represents e front elevation ci emachine embcdyingniy inventicn. Fig. 2 represents n similar view, cn enenlarged seele, cf n pert-ien cf the nxcchine, shcwing also n sectionteken thrcugh the auxiliary blank-holding spindles. Fig. 3 represents eplrin view cf the machine, e partiell cf the upper part et One sidethereof being breken away. Fig. et

represents en elevation ci' n pcrtien cf the. driving mechanism its seenfrein the lelt ci l of Fig. 1. Fig. 5 represents, in sectien and On e.somewhat-enlarged settle, the lmechanism illustratedI in Fig. 4. Fig. 6represents pertial sidev elevation Oli' the machine, es seenSpecification of Letters Patent.

Aunlicatioh iiled April 24. 1905. Serial No. 257,077.

Patented Feb. 19, 1907.

en axial section ci' the blank-holding means, teken on line 7,7 ci' Fig.6. Fig. 8 represents 'e partiel plan ofthe cabinet cf the machine, thecutter-Operating mechanism being removed, showing e section through theturret. Fig.l n9 represents n plen view Of the blank-holding turret.Fig. 10 represents a sectisnsl plan view ci' the turret, es seen n'line.10 10 ct Fig. 7. Fig. 11 represents a. fragmentary section cf theturret, teken On line 11 11 ci' Fig. 9. Figs. 12, 13,1ind14 representcrcss-sectienel views cf the planetary diiierenticlegenr ineehenisin,teken On lines 12 12, 13 13, and.14 14, respectively, Of Fig. 5. Fig. 15represents elevation of the driving mechanism es it appears et the rearct the machine. Figs. 16, 17, and 18 represent Asectienel views teken cnlines 16 16, 17 17, and 18 18, respectively, ct Fig. 5 looking freinleft tO right.. Fig. 19 represents e detail elevntienci the latch fcrautomatically Ireleasing the pztwl-cpernting weight. Fig.

tary gearing.. Figs. 21 end 22 represent the extreme positions cf theweight which operetes the pcwls fcr controlling the planetary gearing.Figs. 23 end 24 nre similar views showing else the respective pewls endthe ratchet-wheels engaged by them. Fig. A 25 rel'iresents e. plcn cfthe pfirts slIOwn in Fig. 21. Fig. 26 represents n pl-ttn cf the timinginechsnisin. Figs, 27 end 28 represent elevations showing diilerentpositions cf the weight-controlling hitch, shown else in Fig. 19. Fig.29 represents e. sectienel view teken Online 29 29 ci' Fig. 27. Fig. 30represents n section Online 3() 30 Of Fig. 2S.

The sai-Ine reference charset ers indicetethe seme parts in all theiigures.

In its mein essentials the machine Oic this invention .identical withthat illustrated and d escrlbeil in Letters lntent el the United. Statesgranteil tO ine Merch 3l), 1897, Nc. 579,708,nnildune11, 1901,1`O.676,227,1nit rlill'ers irOrn snifl nn'tcliine in thnt in pince Ol nsingle device I'Or holding fi. blank 1 have 'provirielliere'rnezinsiOrhOlding nt One time 20 represents n detail elevcticn ci the pewllwhich ccpcretes with n pert et' the plen'e-.

from the right Of Fig. 1. Fig. 7 represents a Aplurality Oiblenks,preternliily six, :ind the l l l necessary Ineens for moving theblank-heller to present successive blanks tu .the ecticn ci' he cutter,as Well as modifications and 1my provements jin the mechanism forvfeeding the cutter land blank.

lflhe maclLne is driven through a cone-pulley 1 on shaft 2 in bearings mtne frame 3 of the machine by a belt from a counter-shaft orfother strtable source of` power, and' shaft 2. drives' a main crank-shaft 4 bymeans of a pulley`5, fast to shaft 2, and a belt 6, passing over pulley5 and the belt-engaging surface of a casng 8, mounted to rotateloosely-on the shaft 4. Mounted on the shaft withln the casing 8 aregears 9 10 11, of which-the former is tightl on the shaft, wlLle thelatter are loose, and their hubs 13 14 are extended out beyondtheflnnits of the casing, the lat# ter vbeing actually journaled uponthe hubs 1 3 14 rather ythan directly upon the shaft. The casing carriesstuds 15 16, on the first of vwhich are mounted rotatable pmions 17 18,which are' rigidly' connected to each other preferably by beingformedfrom a' single.

piece of stock and meshing with the loose gears 10 11, wlLle sm'.larlymounted on the st uil 16v are pinions 19 20, which are rigidly uniteitogether .andmesln respectively, with thefast gear 9 and loose gear 11.1t wLll be seen that these pinions connect the fast gearl 9 with theloose gear 11 and the latter w-th lodse gear 10 independently of thetight gear, whereby motion may be givento the fast gear at' differentrates of speed. The casng 8 constitutes a holder or carrier for thepinions 17 18 19v 20 and as it is rotated by the belt carnes the pinlonsabout the'` gears 9 10 11an1 as gear 9 is tight on the shaft andnerrnally stationary drives gears 10 and 11 locselry Sh ft 4 hasconnected to it at one end a crank 21, which drives a connecting-rod 22,havlng a wr-st connection at 23 with a screw 24, winch passes throughtheI apronor support 25y of' a multiple work-hol. er which is 'slidablymounted on a guldeway26, extend ing at one side of the machine. Anadjust# able connection is provided lbetween the screw 24 and apron 25by a n'ut 27, engaged with the threads of the screw and rotatably.heldin the apron. The nut has connected to it a bevel-gear 28, whichmeshes with a second bevel-gear 29, the shaft of which extends out fromthe frontv of the machine, Where it can be engaged and manually turnedt0 rotate'the nut and adjust vthe blanklhol er v with. respect tothescrew. As the crankshaft 4 is rotated. it reciprocates the blank-.holder back and forth away from and toward the cutter 31 for thepurpose' of pern'litting a completed gear to be removed and of pre-'senting a new blank in position to. be or. eratefl upon by the cutter.The motion of the Work-holder away from the cutter and the greater partof its return motion is at a comparatively hi' gh sneed, which allowstheturd ret 32, carrying the blanks to be indexed, so

speed and feedslthe blank to the cutter un 1 7o the teeth of thelatter'have proper depth into the blan The turret 32 is rotatablymounted upon a central stud 33 on the body or'apron 25 of penetrated tdthe the blank-holder and' carries rotatably 75 mounted' in bearings aplurality of spindles 34, which are adapted to hold gear-blanks 35.Eccentrically mounted in the apron and eX- tending through stud 33 intothe turret is a betweenthe center ofthe turret and the cutter-that is,it is on that side ofthe center of the turret which is-tdward thecutter.l Shait.x

' 36 car-ries fixedly connected to it a pinion 37,

"driving spindleor shaft 36,'which `rs'located 8o and the blank-holdingspindles carry pinions 8 5 38 in the same plane with pinion 37 andadapted 'to vmesh therewith, these pinions constituting complementalclutch members. As shaft 36 is eccentric to. the turret, wh;le thespindles 34 'are arranged at equal distances therefrom, pinion-37 canmesh with only one of the pinions 38 at a time', and the one withwhichit meshes must be that connected` to the spindle nearest the cutter. lhave here shown the shaft 36 as extending up beside and out of Lne withthe spindles 34; but I do ynot 4confine myself'v to such a con#structionjiis l. may arrange'shaft in Lne, with the posltionvoccuplcd bythe` spindle r nearest the cutter and'provide suitableiclutch mechanismother 'than the pinions shown for connecting the shatt lwith the severalspin dles.

The lower ends o f spindles 34 are rotatably' mounted in bushings 39,held in the turret, the llower'ends of which bushings `project IOS downbelow the b'cttomo the turret into la groove 40, termed in the apron.'carrier 41 projects tangentially into an opening in one side cf theapron beneath the turret and approximately\ tangential to the arc on'lliis carrier has'p-ivcted'toitat 42 a` deg' 43, t'hc'free end of whichis held in a sul. stantially hcrizontal position by a spring 44.

A rlhe end of the deg is square, while the upper surface, near the endis upwardly inclined, farming a'cam-surface 45, 'Ihis portion of the degprojects up into the path traveled by the'outermcst spindles as theapron is moved from left to right, being depressed while ene of thebushings moves over the cam-surface 45 and rising again at the left ofsuch bushing after it I has passed. On the return movement cf the apronthe dog engages cne of the bushings, as 39. and holds it staticnary,thereby causing-the turret to be rotated about the stud. 33 untillthe*next bushing 39a strikes an abutment .46 c n the carrier, this`abutment being reinforcedby a hardened which the blank-holding spindlesare located.

` Plate-47, set into the faceof the upwardlyy "ated V 'on ,by thecutter.

,K mechanism to held stationary.

l 1ecting'rib48 of the carrier. When the ushing 39a -has engaged thisabutment, further rotation of the turret is impossible,

' and thev latter is t-herebyheld looked with the in theproper positionto be oper- Y In order to permit r" motio'riof the blank-holder to givepthfeed, the carrier is mounted yieldy,`"its' lefthand portion extendingslightly mg l through a lug 49, While a spring, surround A Spindle '34h'ing this 'portionof the carrier and abutting c against theflu'g and ashoulder on the carrier tends to hold it projected toward the right.,

lArs Was previously stated, the gears 1() and i 11 are normally loose onthe shaft 4 and the back'toward the cutter a suflicientdistance to indexthe turret and bring a blank intoy close proximity with the cutter.rihereupon gear 11 is releasedand gear 10 is immediately 'engaged 4andheld stationary. 'ihe planetarymotien of the gears 18 17 about gear I9aga-in on the, dead-point, which 1s substain ',the. blank, the

then produc'es a slow differential movement in gear 11, which istransmitted through thcplanetarygears 20 19 lto gear 9 at e. stillfur-ther reduced speedv rl'his slow-speed motion continues throughoutthe remainder oft-the rotation of shaft 4 until crank 21 lis tiallyone-sixteenth of a rotation, and gives the necessary depth feed of thecutter into first ifteenssixteenths having been required to back oli'and rotate the turret.

Such movements as those above described are secured by providing theadjacent pinions Withlslightly-diiferent numbers of teeth.

A For instance, suppose the gears 9 and 11 to have the same number ofteeth, but that `19 has one` tooth morek er less than-20 and 17 onetooth more or less than 18. It will thus 'be seen that when gear 11 isheld still one revolution of planetary pinions 19 20 Will rotategear 9by theI distance cf one tooth,

causingl shaft 4 to turn at a fraction of the speed ci the easing. whenthe gear 10 4is restrained t-he planetary ,pinions 18 17 in revolvingturn gear lil-'very slowly/'fand bygiving gear 11 one crjtwo teeth morecr less than gear 10 has it may' "be made to move slightly more c r lessthan acdistance of one tooth/and 1n either direo-y y tion, depending onwhich of the pinions has In a similar manner the greater number ofteeth. Such motion being transmitted to gear 9 throu h the differentialplanetary pinicns 2() arrA 19 gives shaft 4 a motion which is thedilntial b6- 'tv'vcen that of gear 11 and that which it has when thelatter gear is stationary. By proper proportioning of the gears this maybe made of any amount desired and will be vdesigned according to theparticular character ofwcrlr required from each machine.

Tho mechanism by which lirst one of the loose gears and then the otheris held stationary consists ot ratchets 51 52, `carried on the hubs 1413, respectively, yreciprocating paWls53 54 ooactng with these ratchets,respectively, and a iieighted lever 5.5. The leverl55 is pivoted at 56and has projections 57 58 with adjustable soreW-tln'eaded abuttingpieces 59 G0, which are adapted alternately to engage a pin G1 on ashaft 62, said shaft having' collars (i3 .64 provided with gearteeth,which engage, respectively, the pawl members 5 3 and 54, These pawls aremounted on opposite sides ol shalt 6;? so that the rotation or the shattmoves them simultaneously in opposite directions, moving one pawl intoengagement with its respective ratchet and the other pawl out ol'engagement with its ratchet, and vice versa. l'Whcn the shaft is in anintermediate position, (shown in Fig. 18,) both pavvls are ont ol"engagement with their ratehets. .'l he weighted lever 55 has a slottlconeentrio with'pvot 56, through which 'shaft 4 proicets and has pinsor str ds 66 67 GS, studs 67 and GS being on opposite sides ol" thelever.. Normally the lever stands in the position shownfin Fig, 18, withits center of gravity at one. side 'ot its pivot, but beingv preventedfrom falling by engagement of studs Livitli astopper;

.latcli.69. 'lhs stopisz-held inposition to arrest pin (S6 by means ot acam 70, which presses the free end oi the stop forward against thetension of a spring 71. 'l' he Cain is rotated by means of gear 11through a Worm 72', fast to the ratchet 51, carried by said gear, whichWorm meshes with and drives a Wormovheol 73, n "hch, by means otchange-gears 74 and 75 on its shaft and. the shaft oit cam 70,respectively, and an idle p nion 76 rotates the cani. 'the change-gearsare so arranged that cam is rotated ronce during the time required bythe cutter to perform the number of strokes necessary to make a completepLnon. v

'lheeam is circular throughout. the greater portion yot its extent, butis -l"ormed with a single sharp notch or depression 77, which, whenturned "opposite the lower corner of latch (39` permits spring 71 tomove-tho latter out@ of engagement with pin 66. This leaves the:Weighted ,lever unsupported, and it drops as. lair as it is permitted t0go, turning shaft (S2-'Shy means of its engagement 'with the pin 61 tothe left, as seenfin Figs. 1S. 21. and 24,

los

stud to engage pin 61 anv move shaft 62 in right-hand rotation, thusmoving pawl 53 out of engagement with' its ratchet and engaging pawl '54with ratchet 52 thus holding gear 10 stationaryand giving' the shaft itsextremely slow motion. This .motion continues until appin or arm 78,projecting from shaft 4 on the opposite side of lever 55 fromv that onwhich pin 79 is located, ,engages the stud .68 and movesthe weightedlever in the opposite direction'. 4By this time, however, the cam hasbeen suffiso that wheni'the` weighted lever isv moved to the right itsfall is arrested by the latch after it has turned only a sufficientamount to move shaft 62 into an intermediate posi,- vtion and retractpawl 54 from its ratchet without advancing pawl 53 sufficientlyv far toengage ratchet 51. It will be noted that thepins 78. 79 are held bycollars 781 791, respectively, which are secured to the crank-shaft. Ofthesecollars, 781 will ordinarily 'be fixed immovably, so that the limitof the depth feed is invariable, but thecolilar 791 is adjustableon theshaft, being heid' in position by a set-screw 792, and by ,varyshiftedand caused to engage the weight at an early or late point in therotation of the crank-shaft. to vary thev amount of the slow feed.Thusfor work in which a deepy cut- 'slow s eed before the cutting beginsis 50.

avoide The continuously-rotating casing 8 carries. a gear 81, which isrigidly connected thereto, ,being preferably integral therewith, andthis gear meshes with a gear 82, which is fast upon' `and causesrotation of a shaft 83. Upon 'its forward end this shaft carries Aabevel-gear 84, meshing with a complemental bevel-gear 85, the shaft. 86of which extends outwardly and projects from the supportingthroughsuitable change-gears'to-a telescopic shar'ty 87, which extendsv towardthe"y blankholder andcarri'es a Worm 88, in engagement ciently rotatedto project the latch 69 again', of the crank-shaft 4', which causes theindex- '-ing of the turret and depth feed ofthe blank'.

ing its angular vposition the'pin 79 may be is to -be madey pin 79 is.adjusted for ear1\yframe, `from4 which motion is transmitted.

Thisrotation'is communicatedtowne blanlg- 6 5 holding' spindle nearestthecutter' through the' pinions 37'38"- previouslyy described? and,provides the' rotary feed of the' blank. The

' cutter is correspondingly-'rotated from shaft' 83 through a small'.spur-gearv i901,v fast orrthe 7o i .shaft which' meshes -wi-tha'` gearA91v at one` side-of shaftv .832l This ear carries also ar' bevelgear92", 'meshing' with a bevel-geary` 93; l i ony anr inclined shaft'94,whichV isgprovided with universall joints andextend's upv'vfptrdly'` 7 5j operated from the casing 8- is continuous and constant in speedand-iswholly independent` 8K By the appropriate change-gears thesurface'f speedof anysized blank may bemade/ equalto that of the cutter,as iri the' priorA machine referred to, and the adjustment of the'apron'ony screw 24 provides for 'securing the'appro-Y priate depthof 'theout'.

Obviously by providing the maohinejwithA .a plurali-ty of blank-holdingspindles less attention is required onI the part ofthe operator' thanis'the case Where themachine has only a single blank-holder. Thusaftervall o f thel spindles have been suppliedwithl blanks the machine-may beleft without 'further attention'until all of the blanks have beenformed' into gears. Usually the machine is leftv roo until allbut one ofthe blanks have been compkletemuand while the cutter is workin on't elastunfinished blank the'oomplcte gears onthe spindles out Aof engaementl with the cutter are removed and blan s suppliedv while the cutteris still operating upon the last unfinished one. Thus the machine maybecaused towork continuously andA the Work changed without requiring theloss of time vnecessary with machines of the oldl types, which have tobe sto pedv wrhilethe-l blanks "arebeing replaced, an not only is thevoutput of each machine increased but the i' number of machines. that asingle operator' canv handle is increased also, and thereby the l 15labor item in the cost of manufacture of" gears by this machine isreduced. y

The turret for holding a plurality offblanks and the mechanism for'indexing it and presenting the blanks to the-cutter here# 12o inbefore'described is not limited in itsapplii-v 'cation to use withshaping-machines which` plane off the blank by meansv of gear-shapedcutters, since it may as Wellbe-em loyed with machines usingmillingrcutters. v herefore I desire it'to be understood that Vmy inven-tion embraces a' `multiple -blankfholder adapted to: be: employedwith any kindef: at

f adapted to carry at one time a plurality of similar gear-blanks to beacted on succesvsively by one cutter, means for moving said support topresent successive blanks in operative relation to the cutter, and meansfor rotating a blank.

2. The combination of a metal-planing cutter having a circular series ofradiating or outwardly-projecting gear-shaped metalplaning teeth, amultiple blank holder or support adapted to carry a plurality ofgearblanks and movable to present them successively to the cutter, meansfor reciprocating one of said parts to cause the cutter to plane theblank, and means for ehangingthe relative positions of said parts tocause the said teeth to act successively at4 different points on theblank and generatethe curves of gearteeth thereon. A

3. The combination of a metalplaning cutter having a circular series ofradiatin or outwardly-projecting gear-shaped meta planing teeth, amultiple blank holder or support for carrying a plurality of similarblanks, means for reciprocating one of said parts to cause the cutter toplane the blank, means for changing the relative positions of said partsto cause the fsaid teeth to act'successively at different points on theblank and generate the curves of gear-teeth thereon, and means forchanging the relativepositions of the cutter and blank-holder to presentsuccessive blanks -to the action of the cutter.

' 4. The combination of a gear shaped metal-planing cutter havingextern'al'gear-l shaped teeth arranged in a circular series, a multiplebl ank-holder, cutter-operating mechanism having provision forprogressively rotating said cutter to vmake its teeth successivelyoperative, the cutter being reciprocable to give the operative teeththeir cutting and return movements, mechanism` for feeding the blankrotarily, and mechanism for operatinr the blank-holder to presentsuccessive blanks to the action ofthe cutter.

5. The combination of a metal.- planing cutter having a series ofprojecting teeth adapted to have reciprocatmgand lateral motions withrespect to a rotating blank to cut gear-teeth on the latter, a multipleblankholder comp'rislng a rotatable turret and ro-r Athe shaft clutchmembers.

tatable blank-holding means arranged with onefof said blank-holdingmeans adjacent the cutter, means for rotating the turret to bringsuccessive blanks adjacent the cutter, and mechanism for rotating one ofsaid blankholding-means independently of the motion of the turret. at aslow. speed simultaneously with the cutter. i 7. The combination of arotatable earshaped planing-cutter, a multiple vb ankholder comprising arotatable turret and rotatable blank-holding means arranged with one ofsaid blank-holding means adjacent .the cut-ter, means for rotating theturret to brin successive blanks adjacent the cutter, an

mechanism arranged for detachable engage-l ment with the blank-holdingmeans nearest the cutter for rotating simultaneously both the cutter andsaid holding means.

8. The combination of a rotatable gearshaped planing-cutter, a multipleblankholder comprisin a rotatable turret and -rotatable blank-holgdingmeans arranged with one of said blank-homing means adj acentl thecutter, means for rotating the turret to brin l successive blanksadjacent the cutter, an

mechanism comprising a rotatable shaft mountedwithin theperiphery of theturret and between the center thereof and the'cutter, means for rotatingsaid shaft, and connections adapted to be put in detachable androtatable engagement with 'the blank-holding means nearest the cutter asthe,A turret is rotated, for rotating y the blank-holding means andblank held'thereby which is being acted on by the cutter.

ICO

9. The combination of a rotatable gear^ shapedV planing-cutter, amultiple blankholder comprising a rotatable turret and rotatableblank-holding means arranged with one of said blank-holding meansadjacent the"ro5 mitten-'means for rotating the turret to bringsuccessive blanks adjacent the cutter, vand mechanism for rotating theblank-holding means nearest'the cutter, comprisinga shaft eccentric tothe turret and stationary with re-l spect to the rotary motion thereof,theshaft being located between the cutter and the center of the turretand within the periphery of the latter, means for rotating the shaft, aclutch member carried by said shaft, and

IIO

complemental clutch members carried by said blank-holding means andvadapted to be brought into engagement lone at a. time with 10. Thecombination of a rotatablefgearshaped planing-cutter, means for rotating`and reciprocating the same, a multiple blankholder movably mounted andincluding a rctatable turrety and a piurality of blank-holding meanscarried' thereby, mechanism for moving the multiple holder toward andaway from the cutter, means operated by such inotion for rotating stepby step tli'e turretto tir' present -vthe holding me ans and blankscarried thereby successively to the cutter, and mech- .'anismfi'o'rindependently rotating the blankholding .means including a shaftextensible to :permit-movem'ent'of the holder. V11.'"I`he combination ofarotatable'gear- --i'xhapedplaning-'cutten a blank-holder, means.forfniving 4the same toward and from the cut-,`t.ei',l;aishattrotatably mounted in the holder, io. 'mechanismconnected with both said-shaft for rotating them simultaneously andincluding a telescopic ahah-,extensible to permit the said movementofvfthegholdena turret'rotatably mounted on isfthe dereccentric of saidshaft, a-stop ar- ,rangel .to be engaged by the turretI as the latter',moves with' the hoider so as to turn' the saine', a plurality ofrotatable blank-spindles ,carried by the'turret successively up to thecut I, 'and v c omplemental4` clutch members .--carri'ed bythe shaftand"said spindles ar# ranged to'comieot, the shaft with the spindle nearestthecutter to turn the same While the y f cutter ilsbeing turned. v ,25121.5 Ina gear-cutting machine, a cutter, anniltiplebl'ank-holder.including a rotatable Avturret'and fblankfholdingmeans mountedy in the .turret and independently ro# ttbletherehi,A.mechanismfor moving the l:5o-saine tw'ard.' a;nd` awayfrom thecutter,L and f 7 1 .'A1i ret'indexingand looking member `ar- 'n'ngedinthe pathof the turret to be, engaged the'nebyI arrest the saine, causingit tobe "tullidapredetermined amount, and then prefurthery turningmovement. thereof. V317*- agear-ciitting machine', a cutter, awiltipleiblankelio'lder comprising a reciprocabieb-0113s'turretrotatabiy mounted there- 011;, 'and ajplurali-ty of independentl-rotata# theltui'et, movable indexing menibersear ried yby, turret,means for reciprocating saidjinultiplef holder towardl and away from thequtteijfand a 'complemental indexing 15 iiieniljefrf-ffarranged'l to'engage first one and l thenljsgpodof said `mo'vable'members as the h'odreciprocated to'index and: lock n Ache "14','Iii 4 yg'eareiittingmachine, a.cutter, va 59multip1e,.blankholder 'comprising a recipro.L

1'vinkt-er `th remainder of ysuch motion, y

a ed by one theholderI multiple blank-holder comprising a reciprocablebody, a turret rotatably mounted thereon, and a plurality ofindependentlyrotatableblank-holding means mounted in bearings in theturret, projections mounted on the turret equal in number tothe blank-lh olding means and correspondinglylproportioiied, means for moving saidholder toward and--away'from the cutter, acarriei', a dog ivotallyconnected to the cari-ier and arnged in thepath of movement of said projction in position to be engaged by one of. the projections during themovement of vthe holder toward the cutter, the dog and carrier multipleblankfholder comprising a reciprocable body, a turret rotatably mountedthereon, and a'plurality of independentlyrotatable blank-holding meansmounted in bearings in the turret, projections mounted onthe turret'equal in number to the blank-v holding means and correspondinglypropore;

tioned, means for moving said holder toward and avvay from the cutter, ayieldingly- 1 85 16.' Iii a gea -cutting machine, a cutter, a

mounted carrier, a dog pivotally connected to l the carrier and arrangedinthe path of movevment of said projection in position to be engaged byone of the projections during the movement of the holder toward' thecutter,

the dog and carrier being adapted to ofleixsufiicient resistance tocause rotation of the turret', and an abutment onthe carrierl arrangedfor engagement by a projection adjacent that engaging 'the dogto -lockthe turret afterit has been turned, the carrier being adapted to t.yield afterengagement of said abutment by said projection and during theremainder of themovement of the holder toWardthe cuttern- 17. In agear-cutter having a cutter, a tur- .ret-support a turret; multipleblank-holding means; mechanism formoving the turret bodily at a.relatively high speedto index the turret andv at a reduced speed afterthe 'same the shaft, means controlled by rotation of thesliaft fonvarying the'speed thereof, and driving connections between the saidshaft and the turret-support. i

18. In a machine of the character delias been vindexed to feed the Work,-compris-l ing a shaft, differential gearing for rotating TIVO scribed,Ya shaft, a gear fast to vsaid shaft, a I

l plurality of' gears adjacent thereto and loose .on the shaft,'planetary gears'engaging the fast gear With one ofthe los'e gears andcon# neming the loose gears 'togetherindependently of the fast gear,means for holding stationary either of the loose'fgea'rs independ-Yently, whereby the speed of the shaft may be from said shaft adaptedrigidly united and carried by the carrier in shaft tn a .multipleldanlosupporl to cause shaft iscaused to travel'a't variable speeds.mesh with the fast and one of the loose gears,

scribed, a differential driving mechanism Vgears loosely mountedthereon, a loosely-roried by said carrier and meshing with Ithe causereciprocation of a blank-holder.

varied, and driving connections from the reciprocation of the latter atVariable speeds.

19. ln a machine of the character de-` scribed, a shaft, a gear fast tosaid shaft, a plurality of gears adjacent lin-reto and loose g 0n theshaft, a pinion holder or carrier loose l on the shaft, pinionsjonrnaled in said can'- rier and meshing with said gears in such manneras to connect the loose gears together independently of the fast gear,and to connect the fast gear with one of the 4loose ones, means forrotating 'the pinion-holder, automatic mechanism for holding first oneand then another of said loose gears stationary and then releasing them,whereby the and to remain stationary, and connections to reciprocate ablank-holder.

20. In a machine of the character described, a differential drivingmechanism comprising a shaft, a gear `fast thereto, two gears looselymounted thereon, a loosely-rotatable carrier, a pair of planetarypinionsrigidly united and'carried by the carrier in a second pair ofrigidly-united pinionscarried by said' carrier and meshing with theloose gears independently of the fast gear, means for rotating thecarrier, andconnec tions from the shaft arranged to cause reciprocationof a blank-holder. i

,21. In a machine of the character deoomprising a shaft, a gear fastthereto,'two gears loosely mounted thereon, a loosely-rotatable carrier,a pair of planetary pmions mesh with the fast and one of the loosegears` a second vpair of rigidly-united. pinions car-` ried by saidcarrier and meshing with the loose gears independently of the fast gear,means for rotating the carrier, means for re# sisting motion of one ofsaid loose gears,'and connections from the shaft arranged to causereciprocation of a blank-holder.

y 22. In a machine of the character described, a differential drivingmechanism comprising a shaft, a gear fast thereto, two

tatable carrier, a pair of planetary pinions rigidly united and carriedby the carrier in mesh with the fast and one of the loose gears, asecond pair of rigidly-united pinions car'- loose gears Aindependentlyof the fast gear, means for rotating the carrier, automatic mechanismcontrolled by the' shaft for resisting the motion of one of said loosegears, and connections from the shaft' arranged to 23. In a machine of'the character described, Ja differential driving mechanism comprising ashaft. a rear fast thereto, two i gears loosely mounted thereon, aloosely-rotatable 'arln-r, a pair oll planetary pin'ions rigid!)Y uniwdand inrried by the carrier in mesh with the fast and one of llnloosegears,

a setond pair of rigidly-united pinions carried by said carrier andmeshing with the loose gears independently of the fast gear, means forrotating the carrier, members arranged to engage and arrest said loosegears, y

automatic operating mechanism therefor controlled by the shaft andarranged to engage one of said members with one of the loose gears andsimultaneously disengage the lother member and gear, whereby -varyingdifferential speeds of the shaft may be obtained and connectionsjfromthe shaft arran edv tocause reciprooation of a blankhol er.

24. ln a machine of the character specilied agear-cutter, `a multipleblank-holder movable bodily toward and away from the cutter, means forcausing the holder to turn as it is so moved, a driving-shaft connectedto the blank-holder 'for reciprocating t e.

same, and driving means for the shaft ada ted to rotate t-he shaft atdifferent speeds, whereby the holder is moved first at a relatively highspeed while it is being turned, and then more slowly to give the depthfeed to the-work.

25. In a machine of the character specihed, a rotaryand reciprocatoryplaning-cutter, a multiple blank-holding turret, mechanism forsynchronously rotating the cutter and a blank "adjacent the cutter, a'normally stationary shaft connected to reciprocate said turret, andmechanism timed to operate at the conclusion of the operation on a blankto set the shaft in motion for moving the tur- -ret away from the cutterand indexing the turret to present a new blank to the cutter.

26. ln a machine of the character speellfied arotar and reci )rocatorlaninG-cut- 7 D ter, a multiple blank-holding'turret, mechanism forsynchronously rotating the cutter and a blank adjacent the cutter, anormally stationary shaft connected to reciprocate said turret,lmechanism timed to operate at the conclusion of the operation on a blankto set the shaft in motion for moving the turret away from the cutterand indexing the turret to present a new blank to the cutter, and meanscarried by the shaft for operating said mechanism toy reduce the speedof the shaft Hand turret during the last portion of the.

movement thereof toward the cutter.

In testimony whereof I have affixed my slgnature 1n presence of twowitnesses.

vE. R. FELLOVVS.

Witnesses:

A. C.'RATIGAN, E. T. GRAHAM..

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